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authorFlorin Coras <fcoras@cisco.com>2023-02-16 18:59:38 -0800
committerDave Wallace <dwallacelf@gmail.com>2023-03-06 23:02:19 +0000
commit3ffc77da2b750a43c1a254612a5856277f749e68 (patch)
treed412c458700e3100d3f19b36ea58be473d1498b5
parenta41a0b5a4c8430a6141fc847d43484ab1c4b2a0a (diff)
tcp: allow syns in closed state
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: If223096cf912c1748ae417b40585a9bea5d9d9a9
-rw-r--r--src/vnet/tcp/tcp_input.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 9e2ff190d64..32de187eef2 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2628,7 +2628,8 @@ tcp46_listen_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
{
lc = tcp_listener_get (vnet_buffer (b[0])->tcp.connection_index);
}
- else /* We are in TimeWait state*/
+ /* Probably we are in time-wait or closed state */
+ else
{
tcp_connection_t *tc;
tc = tcp_connection_get (vnet_buffer (b[0])->tcp.connection_index,
@@ -3350,7 +3351,7 @@ do { \
_(CLOSED, TCP_FLAG_RST | TCP_FLAG_ACK, TCP_INPUT_NEXT_DROP,
TCP_ERROR_CONNECTION_CLOSED);
_(CLOSED, TCP_FLAG_ACK, TCP_INPUT_NEXT_RESET, TCP_ERROR_CONNECTION_CLOSED);
- _(CLOSED, TCP_FLAG_SYN, TCP_INPUT_NEXT_RESET, TCP_ERROR_CONNECTION_CLOSED);
+ _ (CLOSED, TCP_FLAG_SYN, TCP_INPUT_NEXT_LISTEN, TCP_ERROR_NONE);
_(CLOSED, TCP_FLAG_FIN | TCP_FLAG_ACK, TCP_INPUT_NEXT_RESET,
TCP_ERROR_CONNECTION_CLOSED);
#undef _